Improvement in paper-bag machines



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J. ARKELL.

PAPER-BAG MACHINE. No. 184,121. Patente@ Nov. 7. 1876.

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UNITED STATES 'PATENT OFFICE.,

JAMES ARKELL, OF OANAJOHARIE, NEW YORK.

IMPROVEMENT IN PAPER-BAG MACHINES.'

VSpeciication forming part of Letters Patent No. 184,127, dated November 7, 1876; application filed September 16, 1876.'

.To all whom it may concern Be it known that I, JAMES ARKELL, of Ganajoharie, in the county of Montgomery, in theV State of New York, have invented certain new and useful Improvements in Making Paper Bags; and I do hereby declare that the following is afull and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My present invention relates to a novel means for puncturing paper in the manufacture of paper bags, more especially that kind of bag in which one or more notches are cut out of one of the edges of the paper at the mouth of the bag, as set forth in an application for separate Letters Patent by me for this kind of bag, and now pending in the United States Patent Office.

Previous to my invention it has been customary, in all sorts of paper pun'cturing or cutting mechanism, to cut or puncture the paper by the action of some sort of cutting lor puncturing device 0r instrument operating on the paper while the latter was in contact with some sort of surface adapted to oppose the thrust of the cutting device, and so that the cutting device would penetrate all the stock placed between it and said opposing surface.

This mode of operation is not well adapted to the manufacture of such bags as are, when iinished, to have one side only punctured or cut out at one or more points, and which lare made from a attened tubular blank, because in the making of such an article the cutting has to be done on only'one of two thicknesses of paper arranged pretty close together.

My invention has for its object to provide a way by which.one of the two thicknesses of a flattened paper tube or bag-blank may be punctured or cut clean through in any desired form, and at any desired point or points, without rupture ofthe immediately-adjacent other thickness of stock; and, to this end and object, myinvention consists in a mechanism or 4means by which the attenedA paper tube or bag-blank has one of its thicknesses struck andcut through by .a suitable cutting-instrument, while boththicknesses are movedwalong between rolls in such a manner that the thick ness to be cut through shall be kept taut,while carry out my said invention, as I have suc-v cessfully practiced. it in the manufacture of paper bags of the kind hereinbefore referred to.

In the accompanying drawings, Figure l is an elevation or side view of so much of the machinery employed by me in the manufac-V ture of. the article alluded to as it is necessary.

to show in order to illustrate fully the invention made the subject of this application. Fig.

' 2 is a vertical section of the same at the line a' of Fig. 1, and showing the rolls and cutting device in the position in which the latter would be just previous to puncturing the bagblank or dattened paper tube from which the Vblanks are to be formed; while Fig. 3 is a sim-j ilar sectional view, but with the parts in that position in which they would appear at the time ofthe performance of the puncturing operation, and illustrating the operation performed on the paper. Fig. 4 is a view representing a strip or piece of the punctured dat-V tened tube as it appears before having been separate or cut up crosswise into lengths composing separate bag-blanks. I

In the several views the same parts and devices Will be found designated by the same letter of reference.

A and B are two rolls,mounted in suitable bearings in the frame of the machine, and so geared together by spur-wheels C and D that both shall rotate (in opposite directions) at the proper velocity imparted to one of them," and so arranged relatively that `they shall be capable of carrying through, between oppositeportions of their peripheries in a proper man-` ner, the double thickness of paper or dattened tubular and continuous blank, as the latter is passed to and through saidrolls from-the usual forming and pasting mechanism ernployed to make the continuous Hattened tube from a roll of paper used for .the manufacture;

of the bags. One'ofzthesexrolls, A, is made with a portion of its periphery, near the middle of it lengthwise, turned down to a less diameter than the rest of the roll, as shown at E, and at one point in the circumference of this portion of smaller diameter the stockof the roll is slabhed oft', as clearly shown at F.

In this portion F of the roll A is formed a cir-H cular or other shaped cavity or recess, F2, of sufficient depth to answer the purpose for which it is intended, (which purpose will be presently explained,) and of about the same contour as, and a little larger in area than, the cutting device or 'punching-tool G, which projects from the periphery of the other roll, B. This tool or cutter, as represented at G, is in the shape of a half-tube, o1' semi-cylindrical in forrn,'has' its ysemicircular cuttingedge serrated, as shown, and is arranged to project sufficiently beyond the periphery of the roll B to effectually perform its intended function, in the manner to be presently eX- plained.

vv'This cutter or puncturing-instrument I make, by preference, with a solid circular bottom or head, as illustrated, and secure it at this head or base to the' stock of the roll B by a single screw or bolt, h; but the shape ofthe cutting-edge, the construction of the cutter, and the manner of its securement to the roll may, of course, be modified or varied at the pleasure of the constructer, and to suit the form of notch or cut to be made in the paper; or, if deemed expedient, morethan one cutter may be combined with roll B, in which case a corresponding` number of cavities, F2, would be made in roll A.

In Figs. 2 and 3 I have shown at I portion of a continuous flattened tube (or continuous blank) of paper, such as is prepared in the usual manner, before mentioned, in the conditions in which it would be during its passage 'through the rolls, and While undergoing the puncturing operations.

From Fig. 2 it will be seen that the attened tube of paper I, as it passes between the rolls A B, is only held fast between the impinging peripheries of said rolls, where the larger portions ofthe rollV A run in contact with the paper, and that the said paper tube or blank is therefore not pinched between the rolls during so much of its width (near its middle widthwise) as comes opposite the smaller portion E of said roll A 5 and by reference to Fig. 3 it will be seen that when the rolls A B, during their rotation, come into the proper positions for the puncturing operation to be performed, not only will the paper be free of any pressure from the top roll A at the locality of the smaller portion E of the periphery of said roll, but will be free to move upward to a considerable eXtent by reason of the slabbedoff portion F coming at this time immediately over the paper I; and it will also be seen from this ligure that, in this position of the rolls, the cavity Fz comes immediately over the cutter Gr.

i The operation will be understood to be this:

2r fn 184,127

'cuts through it, making a cut or puncture corresponding in shape to the contour of the cutting-edge of the knife G.

It will be understood that this mode of op- VYeration is made possible by reason of the lower thickness of the blank being held taut, widthwis'e, between the impinging portions of the rolls, while it is unsupported by, or has no opposing surface present above, that portion in the locality of the striking-cutter; and it will be seen that, under this condition of circumstances, the paperI located over the thickness through which the puncture is made, being double and looser, (or not strained like the lower thickness,) will simply be thrown or bulged upward by the knifeedge without being fractured or cut by the latter.

As the cutting-ed ge (or points) of the knife G projects some distance beyond the periphery `of roll B, it consequently travels at a ve-v locity a little greater than that at which the paper I, moved by the peripheryY of said roll, (and its companion A,) travels; and hence a sort of shearing cut is performed, which tends to facilitate the operation of the knife on the paper. Of course the size of the rolls should he such that the puncturing of the paper at each revolution shall occur at such `distances apart on the attened tube I as correspond to the length of the bag-blanks into which said tube I is to be cut up.

v- In the enlarged view of a punctured tube shown at Fig. 4, the dotted lines illustrate where the subsequent cutting up crosswise is done to form the bag-blanks; and from this view it will be seen that, when cut up, each blank will havel the necessary notch formed in it at s, at one edge of one end of the blank designed for the mouth or open end of the finished bag.

Without desiring to limit myself to any peculiarities of form and details of construction ofthe several parts or devices of the machine shown,

What I claim as new, and desire to secure by Letters Patent, is-

In a mechanism for puncturing one thickness only of a flattened tube or blank,the combination, with means, substantially as dcscribed, for carrying along and holding taut the paper blank, in the manner described, of` a cutting or puncturing device operating upon that part of the blank which is unsupported against the thrust ofthe cutter, substantially as set forth.

Witness my hand and seal this 26th day of August, 1876.

JAMES ARKELL.

In presence ot'- J. N. MGINTIRE, JACOB FELBEL.

LL. s] 

